Sluug

The Sluug is a Resonant enemy found in the Sun Tower and Pishon Dry Lake. An upgraded version of the Slug, it has increased damage and health and a new projectile attack.

A Sluug.

The Sluug behaves the same as a Slug, only it can now fire a small glob of poison directly upward that falls straight back down. A common mistake players can make is to start Spin Kicking Sluugs only to get hit by the projectile. In the outdoor portions of the Sun Tower, the projectile can also make platforming more difficult when dealing with other enemies and windmill hazards.

There is a final, even more powerful version of the Sluug called the Sluuuuuuuuuuug.